ArticleJournal of biomechanics2019
Correlations of pelvis state to foot placement do not imply within-step active control.
Article in Journal of biomechanics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Effects of one night of sleep deprivation on single- and dual-task gait.Journal of the Royal Society, Interface · 2026Article
- Foot placement control underlies stable locomotion across species.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Generalizability of foot placement control strategies during unperturbed and perturbed gait.Royal Society open science · 2024Article
- The condition for dynamic stability in humans walking with feedback control.PLoS computational biology · 2024Article
- Consequences of changing planned foot placement on balance control and forward progress.Journal of the Royal Society, Interface · 2024Article
- Article
- Rethinking margin of stability: Incorporating step-to-step regulation to resolve the paradox.Journal of biomechanics · 2022Article
- Quantifying the effect of sagittal plane joint angle variability on bipedal fall risk.PloS one · 2022Article
- Post-stroke deficits in mediolateral foot placement accuracy depend on the prescribed walking task.Journal of biomechanics · 2021Article
- Post-Stroke Adaptation of Lateral Foot Placement Coordination in Variable Environments.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2021Article
- Altered active control of step width in response to mediolateral leg perturbations while walking.Scientific reports · 2020Article
- Active foot placement control ensures stable gait: Effect of constraints on foot placement and ankle moments.PloS one · 2020Observational
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Authors and funding
3 authors.
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Abstract
Experimental studies of human walking have shown that within an individual step, variations in the center of mass (CoM) state can predict corresponding variations in the next foot placement. This has been interpreted by some to indicate the existence of active control in which the nervous system uses the CoM state at or near mid-stance to regulate subsequent foot placement. However, the passive dynamics of the moving body and/or moving limbs also contribute (perhaps strongly) to foot placement, and thus to its variation. The extent to which correlations of CoM state to foot placement reflect the effects of within-step active control, those of passive dynamics, or some combination of both, remains an important and still open question. Here, we used an open-loop-stable 2D walking model to show that this predictive ability cannot by itself be taken as evidence of within-step active control. In our simulations, we too find high correlations between the CoM state and subsequent foot placement, but these correlations are entirely due to passive dynamics as our system has no active control, either within a step or between steps. This demonstrates that any inferences made from such correlations about within-step active control require additional supporting evidence beyond the correlations themselves. Thus, these within-step predictive correlations leave unresolved the relative importance of within-step active control as compared to passive dynamics, meaning that such methods should be used to characterize control in human walking only with caution.
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